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ASTM D3900-05a(2010)
Standard Test Methods for Rubber-Determination of Ethylene Units in Ethylene-Propylene Copolymers (EPM) and in Ethylene-Propylene-Diene Terpolymers (EPDM) by Infrared Spectrometry (Includes all amendments And changes 7/29/2015).
Automaticky přeložený název:
Standardní zkušební metody pro gumový stanovení ethylenu jednotek v kopolymery ethylenu a propylenu (EPM) a ethylen-propylen-dien (EPDM) pomocí infračervené spektrometrie
NORMA vydána dne 1.6.2010
Informace o normě:
Označení normy: ASTM D3900-05a(2010)
Poznámka: NEPLATNÁ
Datum vydání normy: 1.6.2010
Kód zboží: NS-25281
Počet stran: 9
Přibližná hmotnost: 27 g (0.06 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Anotace textu normy ASTM D3900-05a(2010) :
Keywords:
ethylene-propylene copolymers, ethylene-propylene-diene terpolymers, infrared, Cast film method, Chemical analysis--rubber chemicals/materials, EPM/EPDM materials/applications, Ethylene-propylene copolymers, Infrared (IR) analysis--rubber, Infrared spectrophotometry, Pressed film method, Raw rubber, ICS Number Code 83.040.10 (Latex and raw rubber)
Doplňující informace
| Significance and Use | ||||||||
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These test methods can be used for determining which EPDM polymers are evaluated in the different compounds in Test Methods D3568. Differences in ethylene sequence distribution cause differences in crystallinity and green strength at the same ethylene content. Since these are important variables in EPM and EPDM processability and end-use properties, the ethylene content of the rubber should not be used as the sole measurement to determine the suitability of a particular rubber for an intended purpose. |
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| 1. Scope | ||||||||
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1.1 These test methods cover the determination of the proportion of ethylene and propylene units in ethylene-propylene copolymers (EPM) and ethylene-propylenediene terpolymers (EPDM) over the range from 35 to 85 mass % ethylene. Four test methods are needed to encompass the variety of commercial polymers that contain additives or polymerized diene units that interfere with the various infrared peaks. Except when interferences are present, all four test methods should give similar results. The test methods appear in the following order: |
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| 2. Referenced Documents | ||||||||
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